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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

North Penn Water Authority

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

 

186

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND280ND
2013ND300ND
2014ND300ND
2015ND310ND
2016ND330ND
2017ND340ND

ppm = parts per million

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date Lab ID Result
2012-02-1520120539ND
2012-02-1520120540ND
2012-05-0720121655ND
2012-05-0720121656ND
2012-05-0720121657ND
2012-05-0720121658ND
2012-05-0720121659ND
2012-05-1420121751ND
2012-05-1420121752ND
2012-05-1420121753ND
2012-05-1420121754ND
2012-05-1420121755ND
2012-05-1420121756ND
2012-07-1120122417ND
2012-07-1120122418ND
2012-07-1120122421ND
2012-07-1120122419ND
2012-07-1120122420ND
2012-07-2320122540ND
2012-08-0120122653ND
2012-08-0120122654ND
2012-08-0120122655ND
2012-08-0120122656ND
2012-08-0120122657ND
2012-10-1720123676ND
2012-10-1720123677ND
2012-10-1720123679ND
2012-10-1720123678ND
2013-01-1620130194ND
2013-01-1620130195ND
2013-01-1620130196ND
2013-04-1720131310ND
2013-04-1720131311ND
2013-04-1720131313ND
2013-04-1720131312ND
2013-04-1720131314ND
2013-04-1720131315ND
2013-04-1720131316ND
2013-05-1520131673ND
2013-05-1520131674ND
2013-05-1520131675ND
2013-05-1520131676ND
2013-05-1520131677ND
2013-07-1020132436ND
2013-07-1020132437ND
2013-07-1020132440ND
2013-07-1020132441ND
2013-07-1020132438ND
2013-07-1020132439ND
2013-08-1920133004ND
2013-08-1920133005ND
2013-08-1920133006ND
2013-08-1920133007ND
2013-08-1920133008ND
2013-08-1920133009ND
2013-10-1620133734ND
2013-10-1620133735ND
2013-10-1620133736ND
2014-02-2420140682ND
2014-02-2420140683ND
2014-02-2420140684ND
2014-04-2320141402ND
2014-04-2320141403ND
2014-04-2320141404ND
2014-04-2320141405ND
2014-04-2320141406ND
2014-04-2320141407ND
2014-04-2320141408ND
2014-05-1920141691ND
2014-05-1920141692ND
2014-05-1920141693ND
2014-05-1920141694ND
2014-05-1920141695ND
2014-07-1620142439ND
2014-07-1620142440ND
2014-07-1620142441ND
2014-07-1620142451ND
2014-07-1620142442ND
2014-07-1620142443ND
2014-08-1820142816ND
2014-08-1820142817ND
2014-08-1820142818ND
2014-08-1820142819ND
2014-08-1820142821ND
2014-08-1820142820ND
2014-11-1020143813ND
2014-11-1020143814ND
2014-11-1020143815ND
2015-01-1912287140ND
2015-01-1912287143ND
2015-01-1912287146ND
2015-04-2012633065ND
2015-04-2012633068ND
2015-04-2012633071ND
2015-04-2012633074ND
2015-04-2012633077ND
2015-04-2012633080ND
2015-04-2012633083ND
2015-05-1912749687ND
2015-05-1912749690ND
2015-05-1912749693ND
2015-05-1912749696ND
2015-05-1912749699ND
2015-07-1313012673ND
2015-07-1313012675ND
2015-07-1313012677ND
2015-07-1313012679ND
2015-07-1313012681ND
2015-07-1313012683ND
2015-07-1313012685ND
2015-08-1713135649ND
2015-08-1713135652ND
2015-08-1713135655ND
2015-08-1713135658ND
2015-08-1713135661ND
2015-10-0513389203ND
2015-10-0513389205ND
2015-10-0513389207ND
2015-12-0913633287ND
2016-01-1813752778ND
2016-01-1813752780ND
2016-01-1813752782ND
2016-04-2514102818ND
2016-04-2514102820ND
2016-04-2514102822ND
2016-04-2514102824ND
2016-04-2514102826ND
2016-04-2514102828ND
2016-04-2514102830ND
2016-05-1614250788ND
2016-05-1614250790ND
2016-05-1614250792ND
2016-05-1614250794ND
2016-05-1614250796ND
2016-05-1614250798ND
2016-07-1814569932ND
2016-07-1814569934ND
2016-07-1814569936ND
2016-07-1814569938ND
2016-07-1814569940ND
2016-07-1814569942ND
2016-07-1814569944ND
2016-08-1514735593ND
2016-08-1514735595ND
2016-08-1514735597ND
2016-08-1514735599ND
2016-08-1514735601ND
2016-08-2314735730ND
2016-10-0314908624ND
2016-10-0314908626ND
2016-10-0314908628ND
2016-10-0314908630ND
2017-01-2315517183ND
2017-01-2315517185ND
2017-01-2315517187ND
2017-01-2315517189ND
2017-04-0315796065ND
2017-04-0315796067ND
2017-04-0315796069ND
2017-04-0315796071ND
2017-04-0315796073ND
2017-04-0315796075ND
2017-04-0315796077ND
2017-05-0215937833ND
2017-05-1516094555ND
2017-05-1516094557ND
2017-05-1516094559ND
2017-05-1516094561ND
2017-05-1516094563ND
2017-07-2416413284ND
2017-07-2416413286ND
2017-07-2416413288ND
2017-07-2416413290ND
2017-07-2416413292ND
2017-07-2416413294ND
2017-07-2416413296ND
2017-07-2416413298ND
2017-08-1416566049ND
2017-08-1416566051ND
2017-08-1416566053ND
2017-08-1416566055ND
2017-08-1516566057ND
2017-10-0216727443ND
2017-10-0216727445ND
2017-10-0216727447ND
2017-10-0216727449ND